server: migrate all use of log to tracing

server/src/newsreader.rs

@@ -3,11 +3,10 @@ use std::collections::HashMap;
 use cacher::FilesystemCacher;
 use futures::{stream::FuturesUnordered, StreamExt};
 use letterbox_shared::compute_color;
-use log::{error, info};
 use maplit::hashmap;
 use scraper::Selector;
 use sqlx::postgres::PgPool;
-use tracing::instrument;
+use tracing::{error, info, instrument};
 use url::Url;
 
 use crate::{